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Peeling medium for peeling graphene

A graphene and dielectric technology, applied in the field of graphene production, can solve the problems of reducing the service life of equipment, high acid consumption, pollution, etc., and achieve the effect of reducing requirements

Inactive Publication Date: 2016-08-24
戴加龙
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of chemical substance intercalation process consumes a lot of acid, and there are harmful gases such as SOx and NOx or pollution of heavy metal ions in the production process. There are sulfur residues in the product, and the final graphene is prone to defects, and it is harmful to equipment during application. There is corrosion, which reduces the service life of the equipment and increases the production cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The invention is an exfoliation medium which can be used for graphene exfoliation. The composition of the exfoliation medium comprises: 100 parts by weight of water, 30 parts by weight of ethanol and 50 parts by weight of polyacrylate. Wherein, the number average molecular weight of the polyacrylate is greater than 100,000.

Embodiment 2

[0018] The present invention is an exfoliation medium that can be used for graphene exfoliation. The composition of the exfoliation medium includes: 100 parts by weight of water, 40 parts by weight of ethanol, 20 parts by weight of n-propanol, and 80 parts by weight of polyurethane modified acrylate . Wherein, the number average molecular weight of the polyurethane-modified acrylate is greater than 100,000.

Embodiment 3

[0020] The present invention is a peeling medium that can be used for graphene peeling. The composition of the peeling medium includes: 100 parts by weight of water, 40 parts by weight of n-butanol, 40 parts by weight of propylene glycol, and 60 parts by weight of polyurethane modified acrylate . Wherein, the number average molecular weight of the polyurethane-modified acrylate is greater than 100,000.

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PUM

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Abstract

The invention discloses a peeling medium for peeling graphene. The peeling medium comprises the following component in parts by weight: 100 parts of water, 30-100 parts of an alcohol solvent and 50-80 parts of polyacrylate or a polyacrylate derivative. According to the peeling medium, the polyacrylate or the polyacrylate derivative with glue viscidity is added into the peeling medium, and combined liquid is utilized for cooperating with grinding or stirring, so that the requirement on grinding or stirring can be lowered, and graphene can be peeled without ultra-high-speed shearing of a graphite flake layer. When graphene is peeled by virtue of the combined liquid, equipment is not corroded, and the structure of graphene is not damaged.

Description

technical field [0001] The invention relates to the technical field of graphene production, in particular to an exfoliation medium for exfoliating graphite into graphene. Background technique [0002] Graphene is a two-dimensional material with good flexibility and electrical properties. What needs to be added is that, strictly speaking, graphene is a single-layer sheet; however, due to the difficulty of preparing single-layer graphene, oligolayer graphene with similar properties is generally also classified into the category of graphene. Inside. [0003] At present, the methods for preparing graphene mainly include: chemical growth method and physical exfoliation method. Compared with the chemical growth method, which is inefficient and not suitable for industrial mass production, the physical exfoliation method mainly uses cheap graphite as a raw material, and applies mechanical force to the graphite crystal to cause the graphite layers to peel off, breaking the van der ...

Claims

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Application Information

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IPC IPC(8): C01B31/04
Inventor 戴加龙
Owner 戴加龙